A modified QuEChERS method coupled with liquid chromatography-tandem mass spectrometry for the simultaneous detection and quantification of scopolamine, L-hyoscyamine, and sparteine residues in animal-derived food products

Simultaneous Analysis of Metabolite Residues from Degradation of Dithiocarbamates in Cereals Using Liquid Chromatography Coupled with Tandem Mass Spectrometry

Background and Objectives: Dithiocarbamates are groups of fungicides used to control pests of agricultural products. Analysis of these pesticides with liquid and gas chromatography instruments is associated with various problems due to the presence of metal groups in the structure of these compounds. Therefore, one of the ways for analysis the pesticides is to check the level of decomposition...

Liquid Chromatography Tandem Mass/Mass Spectrometry for the Quantification of Fudosteine in Human Serum without Precolumn Derivatization

A quantitative analysis method for fudosteine in human serum by high-performance liquid chromatography-electrospray ionization tandem mass spectrometry (HPLC-ESI/MS/MS) was established, which shows high sensitivity and selectivity. The mobile phase composition was 75% 20 mM acetic acid and 25% acetonitril, which was pumped at a flow rate of 0.40 mL/min. The overall chromatographic run time was ...

Liquid Chromatography Tandem Mass/Mass Spectrometry for the Quantification of Fudosteine in Human Serum without Precolumn Derivatization

A quantitative analysis method for fudosteine in human serum by high-performance liquid chromatography-electrospray ionization tandem mass spectrometry (HPLC-ESI/MS/MS) was established, which shows high sensitivity and selectivity. The mobile phase composition was 75% 20 mM acetic acid and 25% acetonitril, which was pumped at a flow rate of 0.40 mL/min. The overall chromatographic run time was ...

development a liquid chromatography coupled with tandem mass spectrometry (lc-ms/ms) method for simultaneous determination of 108 pesticide residues in rice

Determination of clothianidin residues in garlic by liquid chromatography–tandem mass spectrometry combined with QuEChERS

Clothianidin, a neonicotinoid insecticide, has been applied to broadly control agricultural pests, such as Delia antique. However, few methods for determination of clothianidin in garlic samples have been published so far. In this study, a rapid, sensitive, and environmental-friendly residue determination method based on QuEChERS for analysis of clothianidin residues in garlic was investigated....